Howdy all,

I know many people have used the 4160 in it's various configurations on a Y but I have one that might be different.

I rebuilt this carb about 3 years ago trying to fix a running problem on my 460. When I got it apart it was obvious that the only problems with the carb were the gaskets I destroyed taking it apart!

The 460 is gone now but I still have the carb. It was (is) in great shape and I'd like to use it on my 292.

The different part is that it was used on an OMC 460 (marine engine) so it's a marine carb with vacuum secondaries.

Is there anything I should do with it to make it run ok on the Y? Os should I just sell it and get a more suitable carb for my 292?

   

 

Thanks,  Rick

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1955 F-600/272/E4OD// Disclaimer: No animals were injured while test driving my F-600 except the ones I ran over intentionally!

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This post was created using OpenSuSE Linux x64 and Firefox

Hi Rick - great name.

The first consideration with the carby would be the Holley number stamped on the choke butterfly housing, This will allow you to check the cfm rating. I would think that a carby used on a 460 would be way too big for a 292, though I have found that 465's work brilliantly and 600's are better if you want the power top end.

It is possible overcarburate an engine and depending on the main jets it may run either too lean or too rich.

Holleys generally have a rich idle circuit and on a big carby this will make it increasingly difficult to run correctly.

Hope this helps


Rick - West Australia
Do Y Blocks Downunder run upside down? Gravity Sucks!!

If the carb is indeed a 600 cfm unit, there is a good chance it will run fine on the 292.  If the carb is a 750, then it’s on the big side for a stock Y.  The vacuum secondaries on any of the 4150 and 4160 carbs if properly set up will only open up the amount that’s needed.  If the carb has been factory calibrated specifically for a large cubic inch engine, then there may be a noticable hesitation right of of idle due to the transition slots being relocated for the different idle air flow.  If the carb is a universal 600 cfm carb, then likely not much issue.  What’s the list number on the choke housing of the carb?

Lorena, Texas (South of Waco)

Hey thanks for the quick replies!


Th only reason I want to use this carb is that I have it! It is freshly rebuilt and would probably be great for someones boat.
I also have the PCV check valve that came off the previous engine and I'm sure it will work too....It connects to the nipple on the left side in the last photo.



I took a few pictures and the "list" number is clearly legible in the first photo.



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1955 F-600/272/E4OD// Disclaimer: No animals were injured while test driving my F-600 except the ones I ran over intentionally!

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This post was created using OpenSuSE Linux x64 and Firefox

Ted,



I went to the Holley site and actually found the "LIST" number..... #50399. Holley indicates that it's a 650 CFM carb.

http://www.holley.com/data/TechService/Technical/Carb%20Numerical%20Listing.pdf



If a 600 is OK then I suppose a 650 might be ok too.



I suppose I'll have to change the accelerator pump rate a little so it doesn't dump too much fuel in and maybe change the power valve and maybe play with the main jets?






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1955 F-600/272/E4OD// Disclaimer: No animals were injured while test driving my F-600 except the ones I ran over intentionally!

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This post was created using OpenSuSE Linux x64 and Firefox

I found the list number in one of my books also and shows that your carb was indeed originally intended for a Marine 460.  The four digit number under the list number also indicates that your particular carb was manufactured June 26, 1986.  With the 460 engine part in mind, you’d likely be better off selling the carb and getting one that’s more suited to a smaller cubic inch engine.

 

You could try it but suspect you’ll find an off idle hesitation that’s going to be annoying as well as difficult to correct simply because the transition slot will end up being too high in relation to the throttle blades when used on a small cubic inch engine.  But if you do want to tinker with the carb on your engine, you’ll want to start off with the factory jetting as that’s more related to the carburetor sizing and not the engine for which it’s installed on.  Jet sizing doesn’t make the carburetor bigger or smaller, just changes the air/fuel ratio which is the same for both small and large engines when manifold vacuum signals are comparable for both.

Lorena, Texas (South of Waco)

Ted,

I think you're right. I will probably be better off with another carb. I am pretty sure I can sell this carb since there's still a LOT of people out there with OMC 460's! It is in pretty good shape and all.

I may just buy a new Holley 4bbl. Any suggestions as to model number?

Here's what the Holley "Carb Selector" suggested.

I'm leaning towards the first one......

This one:

390 CFM Four Barrel Street Carburetor
Part #: 0-8007


OR:

570 CFM Four Barrel Carburetor
Part #: 0-80570
UPC #: 090127539095




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1955 F-600/272/E4OD// Disclaimer: No animals were injured while test driving my F-600 except the ones I ran over intentionally!

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This post was created using OpenSuSE Linux x64 and Firefox

Rick.  Either carb works for me but I’m partial to the Avenger series and the 570 would likely give good all around performance.  Especially if any kind of lumpy camshaft has been put into play.   If it’s just a daily driver with a basically stock cam and with no serious intentions of making power above 4500 rpms, consider the 390 carb as it will tend to be just a tad more responsive on the bottom end than the larger carb.  I run the 525 cfm Road Demon Jr. on my own 272 and runs flawless, gets good fuel mileage, and literally boils the hides when you hammer it.

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And to all.  Here are the picture posting instructions again.  Please pay particular attention to the sizing attributes.

Picture posting instructions

Lorena, Texas (South of Waco)

Ted,





Thanks for the info! I'll probably end up with the smaller one....(This is an F-600!! not a Hot-Rod!)



I already have people that want this carb for their boats...







Sorry for the oversize pics!! I have a BIG monitor and they only required minor scrolling to see....I'll make sure they're smaller in the future....



I use the GIMP http://www.gimp.org/ for photo editing running on OpenSuSE 11.1

I suppose it would be better to just adjust the resolution in my camera (Nikon Coolpix 950)





Thanks again!



Rick




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1955 F-600/272/E4OD// Disclaimer: No animals were injured while test driving my F-600 except the ones I ran over intentionally!

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This post was created using OpenSuSE Linux x64 and Firefox

Hi, you will notice on this 650 carb that it is the same as normal type, the marine application had tubes on the bowl vents that directed any fumes, flooding overflow fuel directly back down into venturi to be quickly reused to avoid fuel explosion or flames. plus they usually ran flame arrestor type air filters to again prevent fires etc. regards Aussie bill.

  AussieBill            YYYY    Forever Y Block     YYYY

 Down Under, Australia